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Walking robot and method for controlling posture thereof

a robot and walking technology, applied in the field of walking robots, can solve the problems of low energy efficiency, high rigidity, and giving the surroundings a big shock

Active Publication Date: 2012-06-07
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Therefore, it is an aspect of an embodiment to provide a walking robot which maintains a stable upper body angle so as to keep an erect posture and balance even when external force is applied or an inclination angle of the ground varies, and a method of controlling a posture thereof.
[0021]The method may further include computing damping torque of each of the legs, and the computing of the joint torque may compensate for the computed joint torque of each of the legs using the damping torque.

Problems solved by technology

Therefore, since high current is necessary, energy efficiency is low and joint rigidity is high, thereby giving surroundings a big shock.
Thus, the robot may unnaturally walk unlike a human.

Method used

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  • Walking robot and method for controlling posture thereof
  • Walking robot and method for controlling posture thereof
  • Walking robot and method for controlling posture thereof

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Embodiment Construction

[0036]Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings.

[0037]FIG. 1 is a diagram showing the appearance of a robot according to an embodiment, and FIG. 2 is a diagram showing the structures of main joints of the robot shown in FIG. 1.

[0038]In FIGS. 1 and 2, the robot 100 is a bipedal robot which walks erect using two legs 110 similar to a human, and includes an upper body 101 including a torso 102, a head 104 and arms 16, and a lower body 103 including two legs 110.

[0039]The upper body 101 of the robot 100 includes the torso 102, the head 104 connected to the upper portion of the torso 102 via a neck 120, two arms 106L and 106R connected to both sides of the upper portion of the torso 102 via shoulders 114L and 114R, and hands 108L and 108R respectively connected to ends of the two arms 106L and 106R.

[0040]A waist joint portion 15 with one degree of freedom in a yaw direction is provided in the torso 102 of the robot...

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Abstract

A walking robot having joints which move using a torque servo, a posture of the robot being stably controlled, and a method of controlling a posture of the robot. It is possible to maintain a stable angle of the upper body while keeping an erect posture and balance using the COG of the robot and the inclination and the direction of the upper body and the pelvis of the robot, even in an external variation including external force or an inclination angle of the ground. Even in a state in which terrain information is not known in advance, the robot may keep an erect posture in a direction of gravity. Even when a plane where the robot stands is gradually inclined, the postures of the upper body and the legs of the robot may be kept while actively changing the angle of the ankle joint.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of Korean Patent Application No. 2010-122157, filed on Dec. 2, 2010 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.BACKGROUND[0002]1. Field[0003]Embodiments relate to a walking robot having joints which move using a torque servo, a posture of the robot being stably controlled, and a method of controlling a posture of the robot.[0004]2. Description of the Related Art[0005]In general, research into a walking robot which has a joint structure similar to that of a human and coexists with the humans in a working and living space has been actively conducted. The walking robot includes a multilegged walking robot having multiple legs such as two legs or three legs. For stable walking, an actuator such as an electric motor or a hydraulic motor mounted in each joint is driven. Examples of a method of driving an actuator include a position-based Zero Moment...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G05B15/00
CPCB62D57/032B25J9/104
Inventor SEO, KEE HONG
Owner SAMSUNG ELECTRONICS CO LTD
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